"The results show that based on plausible climate trends, and a
total failure to change course, the global food supply system
would face catastrophic losses, and an unprecedented epidemic of
food riots," the institute's director, Aled Jones,
told investigative journalism project Insurge
Intelligence. "In this scenario, global society essentially
collapses as food production falls permanently short of
consumption."

Here's how the different climate changes listed affect our food:

A warming planet leads to less
food. Climate changes affect how farmers plan for
the upcoming year. According to the IPCC's report from 2014,
every decade of warming that happens decreases the amount of
food the world can produce by 2%, or
4.4 million metric tons of food.

Droughts cut back on the food
produced. The California drought is an example of
how the climate affects food and how much access people have to
it. The USDA
noted in June that "depending on its continued
severity, the drought in California has the potential to drive
prices for fruit, vegetables, dairy, and eggs up even further."

Flooding decreases the amount of available land for
farming. If the Mississippi and Missouri rivers
flood, the report points out, it would cut corn production in
the US by 27%, soybeans by 19%, and wheat by 7%, according to
the institute's scenario. That's about 3.8 billion bushels of
corn lost, based on the
amount of corn produced in the US in 2014.

More frequent extreme weather makes it harder to have a
reliable crop yield. Tornadoes, torrential
downpours, etc. cause damage to lands that otherwise contain
crops. An increasing amount of these weather events —
a result of climate change — makes it harder to rely on a
steady supply of food, thus driving up prices on all that
remains.

All of these weather crises, in the GSI's scenario, could lead to
food riots and increased global insecurity.